Theory for the cyclotron resonance of holes in strained asymmetric Ge-SiGe quantum wells

Winkler, R. and Merkler, M. and Darnhofer, T. and Rössler, Ulrich (1996) Theory for the cyclotron resonance of holes in strained asymmetric Ge-SiGe quantum wells. PHYSICAL REVIEW B, 53 (16). pp. 10858-10865. ISSN 1550-235X, 1098-0121

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Abstract

We present calculations of hole Landau levels, cyclotron masses, acid far-infrared spectra for strained asymmetric p-type Ge-SixCe1-x quantum wells in a perpendicular magnetic field in order to interpret recent experimental results by Engelhardt et al. [Solid State Electron. 37, 949 (1994)]. Self-consistent hole subband calculations are combined with calculations of the Landau levels using a 6 x 6 k . p Hamiltonian for the topmost Gamma(8) and Gamma(7) bulk valence bands. Our results are in very good agreement with the experimental data. Taking into account the coupling to the split-off band turns out to be important. The complex spectra of hole Landau levels in strained quantum wells remind one of the well known quantum resonance spectra of bulk p-type Ge under uniaxial stress.

Item Type: Article
Uncontrolled Keywords: BAND PARAMETERS; VALENCE BANDS; LANDAU-LEVELS; GAAS; HETEROJUNCTIONS; SEMICONDUCTORS; ANISOTROPY; SUBBANDS; EPITAXY; GAS
Subjects: 500 Science > 530 Physics
Divisions: Physics > Institute of Theroretical Physics > Alumni or Retired Professors > Group Ulrich Rössler
Depositing User: Dr. Gernot Deinzer
Date Deposited: 02 Nov 2023 06:42
Last Modified: 02 Nov 2023 06:42
URI: https://pred.uni-regensburg.de/id/eprint/51783

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